Howard Wieman

Howard Henry Wieman is an experimental nuclear physicist specializing in instrumentation and detectors for high-energy nuclear physics.^[1][2][3][4]

Howard Henry Wieman
Born	1942 (age 82–83) Oregon, USA
Alma mater	Oregon State University University of Washington
Known for	STAR detector, Time Projection Chamber, Active-pixel sensor
Family	Carl Wieman + 3 more siblings Henry Nelson Wieman
Awards	Tom W. Bonner Prize in Nuclear Physics (2015).[1] Fellow of the American Physical Society (2001)[2] LBNL J.M. Nitschke Technical Excellence Award (1999)[3]
Scientific career
Fields	Physics, Nuclear Physics
Institutions	Lawrence Berkeley National Laboratory (LBNL) Helmholtz Centre for Heavy Ion Research (GSI) University of Colorado
Doctoral advisor	Isaac Halpern

In 2015, Wieman (LBNL) and Miklos Gyulassy (Columbia) were awarded the APS Tom W. Bonner Prize in Nuclear Physics.^[5]

Wieman is best known for leading the team that designed the STAR^[6] Time Projection Chamber (TPC) which was used to discover a new state of matter, the strongly interacting Quark-gluon plasma. The discovery was made at the Relativistic Heavy Ion Collider (RHIC) at Brookhaven National Laboratory. The STAR TPC was built in Berkeley,^[7] installed at RHIC, and tested throughout 1998 and 1999. The first Gold-Gold collisions at RHIC were recorded with the TPC on June 12, 2000.^[8][9][10] Seven months later, in January 2001, the STAR collaboration published the first measurement of elliptic flow in ultra-relativistic Gold-Gold collisions which indicated that the collision zone at RHIC energies is behaving hydrodynamically and with significant thermalization. This was a key step in making the discovery of a strongly interacting Quark Gluon Plasma, and a perfect liquid,^{[11][12][13][14]} which was announced in 2005 by all 4 RHIC detector collaborations.^{[15][16][17][18]}

Education and career

Wieman received his bachelor's degree from Oregon State University in 1966 and his doctorate in 1975 from the University of Washington. His doctoral advisor was Isaac Halpern. He was a post-doctoral fellow at the University of Colorado and then spent the bulk of his career as a Senior Scientist at the Lawrence Berkeley National Laboratory.^[3][19] At times, he also worked for and in collaboration with the Gesellschaft für Schwerionenforschung (GSI, Darmstadt). He retired from LBNL in 2011 but remains active in research.^[20]

At LBNL he was responsible for the design and installation of the Low Energy Beam Line at the Bevalac heavy ion accelerator and for the development of two generations of large Time Projection Chambers (TPCs). His first TPC was the EOS Time Projection Chamber at the Bevalac,^[4][21] which he co-led with Hans-Georg Ritter. Wieman then led the design and construction of a larger TPC for the STAR detector at the Relativistic Heavy Ion Collider (RHIC) at Brookhaven National Laboratory. He finished his career working with thin, high resolution, active pixel sensors. In particular, the Heavy Flavor Tracker (HFT) pixel detector for the STAR experiment was a ground-breaking device^[22] It became operational in 2014 and was used to observe D mesons produced in heavy ion collisions.^[23]

Wieman is a Fellow of the American Physical Society,^[2] was awarded the LBNL J.M. Nitschke Technical Excellence Award in 1999,^[3] and received the APS Tom W. Bonner Prize for Nuclear Physics^[5] in 2015.